Injector for a textile processing machine

ABSTRACT

An injector for a textile processing machine for the manufacture of fleece material. A pressurized medium is introduced to an inflow chamber ( 13 ) provided inside an injector body ( 11 ) via several channels ( 23 ) in fluid communication with a pressure distribution chamber ( 18 ). The communicating channels ( 23 ) are cylindrical bores provided in the injector body ( 11 ) and arranged in one or two rows so as to be offset relative to the longitudinal center plane ( 39 ) of the inflow chamber ( 13 ). The pressure distribution chamber ( 18 ) adjoining the communicating channels ( 23 ) comprises a first wall section ( 45 ) forming a first deflecting surface ( 46 ) extending, at least in sections, diagonally or transversely with respect to the longitudinal axis ( 26 ) of the communicating channels ( 23 ). The medium flowing from the communicating channels ( 23 ) is deflected by the first deflecting surface ( 46 ), so that said medium changes direction before reaching the downstream nozzle openings ( 37 ). Consequently, a direct straight flow to the nozzle openings ( 37 ) from the inflow chamber ( 13 ) is not possible. Through the nozzle openings ( 37 ), water jets ( 38 ) are formed that are ejected by the injector ( 10 ) via an exit opening ( 30.

CROSS-REFERENCE TO RELATED APPLICATION

The present application claims the priority of European PatentApplication No. 09 012 009.8, filed Sep. 22, 2009, the subject matter ofwhich, in its entirety, is incorporated herein by reference.

BACKGROUND OF THE INVENTION

The invention relates to an injector for a textile processing machine.The injector comprises an inflow chamber that is in fluid communicationor can be in fluid communication with a pressure source. The pressurizedfluid or gaseous medium, preferably water, of the inflow chamber isfurther conveyed to a pressure distribution chamber via at least onecommunicating channel and, in particular, via several communicatingchannels. The pressure distribution chamber is in fluid communicationwith an exit opening. Between the pressure distribution chamber and theexit opening, there is a receptacle for a strip-shaped nozzle foil, fora nozzle strip. The nozzle foil has a plurality of nozzle openingswhich, with the nozzle foil installed in said receptacle, provide fluidcommunication between the pressure distribution chamber and the exitopening. The nozzle openings are disposed to form fine, needle-like jetsof the medium, whereby said jets can be ejected through the exit openingby the injector. With the help of the jets, a random fiber non-woven iscompacted to produce a fleece material. When in use, a water jetcompacting system may comprise several injectors arranged eithersuccessively in series or radially around a drum. The series arrangementinvolves a web abutment; the arrangement around a drum involves a drumabutment. It is also possible to combine the drum abutment and the webabutment in one water jet compacting system.

It has been found that jets—in particular water jets—of varying qualitymay be formed, depending on the inflow conditions of the nozzle openingsin the pressure distribution chamber. If the flow to the nozzle openingthrough the communicating channel and the pressure distribution chamberis straight, the resultant water jet is more compact and more stable inview of its needle-like form. Different therefrom, nozzle openings overwhich turbulent currents form in the pressure distribution chamberproduce more diffuse water jets. These differences between the waterjets result in different densities in the random fiber non-woven, sothat it is not possible to produce a fleece material displaying uniformstrength and density.

In order to eliminate this problem, DE 600 11 900 T2 suggests that thecommunicating channel be configured as a slit channel, in which case theflow to the nozzle openings in alignment with the slit channel can beboth straight and direct, and essentially turbulence-free. In order toensure this, the flow conditions in the region of the input orifice ofthe slit channel must be equalized along the length of the slit channel;to accomplish this, a perforated tube is arranged in the inflow chamber,said tube being disposed to distribute—in the inflow chamber—the watersupplied by the pressure source.

An injector has been known from DE 10 2005 055 939 B3, said injectorcomprising an impact element in the form of a cylinder in the pressuredistribution chamber below the output orifices of the communicatingchannels in order to avoid a direct flow to some of the nozzle openings.In doing so, the water flowing out of the communicating channels firstimpinges on the impact element and flows around said element beforereaching the nozzle openings.

Considering this, the object of the present invention may be viewed asproviding an injector that does not require additional flow-conveyingcomponents in the inflow chamber or in the pressure distribution chamberand still ensures a uniform water jet formation.

SUMMARY OF THE INVENTION

The above object generally is achieved with an injector in accordancewith the invention wherein the flow path of the medium between theinflow chamber and the nozzle openings is defined by the at least onecommunicating channel, as well as by the pressure distribution chamber.Considering the injector in accordance with the invention, this flowpath is prespecified by the course of the communicating channel and/orthe pressure distribution chamber in that said flow path contains atleast one deflecting site that is represented by a section of thecommunicating channel and/or of the pressure distribution channel. Adeflecting site comprises the entire surface of a region, i.e., a wallsection of the communicating channel and/or of the pressure distributionchamber. At this first deflecting site, the direction of flow of themedium, preferably of the water, is changed before said medium reachesthe nozzle openings of the nozzle strip or nozzle foil. In this manner,it is ensured that a straight, direct flow of the medium flowing out ofthe inflow chamber is not possible at any of the nozzle openings. Theflow conditions at the nozzle openings are equalized, thereby avoidingdifference between the jets that lead to differences with regard to thequality and the density of the produced fleece material. It is notnecessary to arrange flow-influencing components in the inflow chamberor in the pressure distribution chamber. Consequently, the two chambersmay have smaller dimensions, so that the wall surface of the chambers issmaller. The pressure of the medium acting on a smaller wall surfacereduces the deformation force exerted on the injector, so that the wallthicknesses of the injector may be reduced. This makes it possible forthe exterior shape of the injector to be adapted to the changedrequirements. Consequently, it is possible, for example, for theinjector to have a conical exterior form. In this case, it has a smallerwidth in the region of the nozzle openings than in the region of theinflow chamber. With a radial arrangement of several injectors around avacuum drum this enables an arrangement of the injectors more closelynext to each other than in the case of a rectangular embodiment of theinjector. Furthermore, this also facilitates the maintenance of theinjector, for example, when cleaning the chambers that do not containany components.

Advantageously, the communicating channel between the input orifice inthe inflow chamber and the output orifice in the pressure distributionchamber enables a straight flow. For example, the communicating channelmay consist of a cylindrical bore. As a result of this, it is possibleto easily create the at least one communicating channel. In particular,several communicating channels are provided at regular distances inlongitudinal direction between the inflow chamber and the pressuredistribution chamber.

Preferably, the communicating channel or the communicating channelsextend outside a longitudinal center plane extending in longitudinaldirection centrally through the output orifice and—with the nozzle foilinstalled in the injector—through the nozzle foil. The communicatingchannel or channels do not intersect this longitudinal center plane.Considering this arrangement of the communicating channel, the inputorifice of said communicating channel, viewed in section, represents aradius.

If several communicating channels are provided, at least one of thecommunicating channels may be arranged at a distance from thelongitudinal center plane on both sides of the longitudinal center planethrough the exit opening. In other words: the longitudinal center planethrough the exit opening divides the injector into two parts, whereby atleast one communicating channel is provided in both parts. In thismanner, water can flow from different and, for example, oppositedirections into the pressure distribution chamber. The streams of waterconveyed in from different communicating channels and displayingdifferent inflow directions can either be directly pointed at each otheror be introduced, in longitudinal direction offset with respect to eachother, into the pressure distribution chamber. Both measures aresuitable to produce highly uniform flow conditions in the pressuredistribution chamber in the transition region to the exit opening, wherethe nozzle openings are located when the nozzle foil is in use. Ifseveral communicating channels are provided on one side of thelongitudinal center plane of the exit opening, these may be at differentdistances from the longitudinal center plane.

Considering a preferred embodiment, the first deflecting site in theflow path in the pressure distribution chamber is provided downstream ofthe output orifice. The first deflecting site, said deflecting sitecomprising the entire surface of a first wall section of the pressuredistribution chamber, comprises a first deflecting surface. This firstdeflecting surface, said surface extending diagonally or transverselywith respect to the outflow direction of the water exiting through theoutput orifice and thus representing the first resistance in the courseof the flow and affecting the flow direction, and a second deflectingsurface, said surface being arranged radially with respect to the flowdirection opposite the first deflecting surface, thus represent thefirst deflecting site. Preferably, the first deflecting surface consistsof a first wall section of the pressure distribution chamber.

Downstream of the first deflecting site in the flow path of the water,it is possible to provide and additional, second deflecting site that islocated, in particular, in the pressure distribution chamber and,considering a simple embodiment, is preferably formed by a wall sectionof the pressure distribution chamber. Likewise, this second deflectingsite comprises the entire surface of the wall section associatedtherewith. The water reaches the nozzle openings of the nozzle striponly after flowing through the two deflecting sites.

The deflecting surfaces may have one or several plane surface sections.It is also possible to configure the deflecting surfaces so as to becurved, for example, concave or convex. Preferably, the deflectingsurfaces are without edges.

The inflow chamber and the at least one communicating channel may beprovided in an injector body. In doing so, the injector body ispreferably connected to an injector base having an exit opening. In apreferred embodiment of the injector, the injector body as well as theinjector base delimit the pressure distribution chamber, said chamberthus being formed by a space between the injector body and injectorbase. Such an embodiment allows a simple formation of the pressuredistribution chamber. In doing so, the first deflecting surface of thefirst deflecting site may be provided on the injector base. The seconddeflecting surface of the first deflecting site may be provided on theinjector body. Therefore, the two deflecting surfaces can be very easilyproduced during the manufacture of the injector base or the injectorbody. In this exemplary embodiment, the first deflecting surface of thesecond deflecting site can be provided on the injector body, and thesecond deflecting surface of the second deflecting site may be providedon the injector base. Furthermore, considering another exemplaryembodiment, it is possible to provide the first deflecting surface ofthe first deflecting site on the injector body and to provide the seconddeflecting surface of the first deflecting site on the injector base.

In special applications, it is possible to arrange the communicatingchannel at an angle not equal to 90° relative to the longitudinal centerplane of the inflow chamber. Then, it is possible to arrange the inputorifice of the communicating channel on one side of the longitudinalcenter plane and the output orifice of the communicating channel on theother side of the longitudinal center plane. It is also possible for thelongitudinal center axis of the communicating channel to intersect thelongitudinal center plane of the inflow chamber in the region of theinput orifice, and for the output orifice of the communicating channelto be arranged at a distance from the longitudinal center plane of theinflow chamber. In the case of such an arrangement, the input orificehas an elliptical circumference that can be of advantage from theviewpoint of flow technology.

Advantageous embodiments and additional features of the invention areobvious from the dependent patent claims and the description. Thedrawings are to be used for supplementary reference. Hereinafter,exemplary embodiments of the invention are explained in detail withreference to the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic longitudinal section of a first exemplaryembodiment of an injector, along section line I-I in FIG. 2 a.

FIG. 2 a is a cross-section of the injector of FIG. 1, along sectionline II-II in FIG. 1.

FIG. 2 b is a schematic cross-sectional representation of the firstdeflecting site of FIG. 2 a.

FIG. 3 is a schematic cross-sectional representation of a modificationof the exemplary embodiment of the injector in accordance with FIGS. 1,2 a and 2 b.

FIG. 4 is a schematic cross-sectional representation of anotherexemplary embodiment of an injector comprising two rows of communicatingchannels extending in longitudinal direction.

FIG. 5 is a schematic cross-sectional representation of a modificationof the exemplary embodiment of the injector in accordance with FIG. 4.

FIG. 6 is a longitudinal section of a detail of the inflow chamber of anexemplary embodiment comprising two rows of communicating channels,along section line III-III in FIG. 4 or 5.

FIG. 7 shows a modification of the arrangement of the two rows ofcommunicating channels in accordance with the view of FIG. 6.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a first exemplary embodiment of an injector 10 of a textileprocessing machine that is used for the production of fleece materials.The injector 10 comprises an injector body 11 and an injector base 12that are connected to each other. Inside the injector body 11 is aninflow chamber 13 that communicates with a pressure source 15 via aninflow opening 14. In the exemplary embodiment, the inflow chamber 13has the shape of a cylinder. The inflow opening 14 is a bore providedcoaxially with respect to the longitudinal axis of the inflow chamber13. On the longitudinal end side opposite the inflow opening 14, theinflow chamber 13 is closed in a fluid-tight manner by a screwed-in cap16 of the injector body 11. To do so, a ring seal 17 may be providedbetween the cap 16 and the seat of the cap.

Furthermore, the injector 10 comprises a pressure distribution chamber18 that extends in a longitudinal direction L in the region between theinjector body 11 and the injector base 12. Consequently, the pressuredistribution chamber 18 is made up of the injector body 11 and theinjector base 12 together. To do so, the injector base 12 has a recess19 that is open toward the injector body 11. Correspondingly, a recess20 open toward the injector base 12 is provided in the injector body 11.After connecting the injector body 11 and the injector base 12, the tworecesses 19, 20 together form the pressure distribution chamber 18. Inorder to create fluid-tightness between the injector body 11 and theinjector base 12, it is possible to provide one or more sealing devicesthat are not specifically shown in the drawing.

The inflow chamber 13 and the pressure distribution chamber 18 are influid communication with the help of a plurality of communicatingchannels 23. The communicating channels 23 extend between an inputorifice 24 in the inflow chamber 13 and an output orifice 25 in thepressure distribution chamber 18. In the preferred exemplary embodiment,the communicating channels 23 are represented by cylindrical bores inthe injector body 11. The longitudinal axes 26 of the communicatingchannels 23 essentially extend at a right angle relative to longitudinaldirection L of the injector 10. Consequently, the output orifice 25 isin the recess 20 that forms the part of the pressure chamber 18 that isdelimited by the injector body 11.

An exit opening 30 is provided on the injector base 12. Said exitopening extends in longitudinal direction L and is in fluidcommunication with the pressure distribution chamber 18. Adjoining thepressure distribution chamber 18, the exit opening 30 has a slit-shapedsection 31 that is adjoined by a conical section 32. When viewed incross-section in accordance with FIG. 2 a, the exit opening 30 has anoverall funnel-shaped form. The side of the injector base 12 facing awayfrom the injector body 11 forms an exit side 33 of the injector 10. Theconical section 32 of the exit opening 30 is open toward the exit side33. A longitudinal center plane 34 divides the exit opening 30 in thecenter. In the preferred exemplary embodiment, the exit opening 30 issymmetrical with respect to the longitudinal center plane 34.

A receptacle 35 for a nozzle foil 36 is provided in the transitionregion between the pressure distribution chamber 18 and the exit opening30. The nozzle foil 36 has a plurality of nozzle openings 37 that arearranged, in particular, at regular intervals in longitudinal directionL. One or also more rows of nozzle openings 37 may be arranged next toeach other in the nozzle strip 36 in longitudinal direction L. Thenozzle openings 37 completely extend through the nozzle foil 36. Withthe nozzle foil 36 inserted in the receptacle 35, the nozzle openings 37are located between the pressure distribution chamber 18 and the exitopening 30. The pressurized medium made available in the pressuredistribution chamber 18—for example water in the exemplaryembodiment—flows through the nozzle openings 37 and is thus transformedinto fine, needle-like jets 38, i.e. water jets, as is schematicallyshown in dotted lines in FIG. 1. The receptacle 35 comprises a seat forthe nozzle foil 36, said seat accommodating a ring-shaped seal 29 inorder to prevent the stream from flowing around the nozzle foil.Consequently, the water is forced to flow through the nozzle openings37.

The communicating channels 23 in accordance with the example extendcompletely outside the longitudinal center plane 34 of the exit opening30. The longitudinal axes 26 of the communicating channels 23 extendparallel to the longitudinal center plane 34 through the exit opening 30at a distance with respect thereto. Referring to the preferred exemplaryembodiments of the injector 10 described here, the input orifices 24 arepositioned so as to be laterally offset in a direction transverse withrespect to longitudinal direction L relative to a longitudinal centerplane 39 through the inflow chamber 13 (FIG. 2 a).

Between the input orifice 24 and the exit opening 30, the communicatingchannel 23 and the pressure distribution chamber 18 define a flow path40 for the water flowing between the inflow chamber 13 and the exitopening 30. This flow path 40 comprises a first deflecting site 41 wherethe flow direction of the water is changed. This prevents that astraight flow path is possible between the input orifice 24 and the exitopening 30.

The first deflecting site 41 is represented by a first wall section 45of the pressure distribution chamber 18 that comprises a firstdeflecting surface 46 and a second deflecting surface 61. This firstdeflecting surface 46 is located downstream opposite the output orifice25 and extends, at least in sections, diagonally or transversely withrespect to the flow direction of the medium flowing out of the outputorifice 25. The deflecting surface 46 is arranged on the outside of thecommunicating channel 23. In the exemplary embodiment, the firstdeflecting surface 46 is provided in the injector base 12 and thusrepresents one wall section of the recess 19 provided in the injectorbase 12. The first deflecting surface 46 extends in longitudinaldirection L along the pressure distribution chamber 18. Said latterdeflecting surface is curved about an axis extending in longitudinaldirection L so as to be concave. The radius of curvature may bedetermined as a function of the spatial conditions of the injector 10.The second deflecting surface 61 of the first deflecting site 41 isarranged—in flow direction—so as to be radially opposite the firstdeflecting surface 45. This second deflecting surface 61 is configuredso as to represent a straight, plane surface that is arranged at anacute angle relative to the longitudinal axis 26 of the communicatingchannel 23 and to extend in longitudinal direction L along the pressuredistribution chamber 18. The flow direction of the medium is defined bythe interaction of the first deflecting surface 46 and the seconddeflecting surface 61.

As an alternative to the illustrated exemplary embodiments it is alsopossible for the first deflecting surface 46 to have one or more planesurface sections or to be formed by one of more plane surface sections.The second deflecting surface 61 may be curved so as to be concave orconvex, for example. Preferably, the two deflecting surfaces 46, 61 donot have edges.

The first deflecting site 41 is located in the axial extension of thecommunicating channels 23. The longitudinal axes 26 of the communicatingchannels 23 intersect the first deflecting surface 46 of the first wallsection 45 of the first deflecting site 41. The first deflecting surface46 is not formed by an additional component but is created when thepressure distribution chamber 18 is formed. The injector consists onlyof the injector body 11 and injector base 12. An additional, separatecomponent that has the deflecting surface 46 is not necessary.

Downstream of the first deflecting site 41, for example, the flow path40 has a second deflecting site 49. The second deflecting site 49 isrepresented by a second wall section 50 of the pressure distributionchamber 18, said wall section comprising a first deflecting surface 51and a second deflecting surface 62. The first deflecting surface 51 ofthe second deflecting site 49 is located on the injector body 11. Saidfirst deflecting surface is part of the recess 20 provided in theinjector body 11. In the exemplary embodiments described here, the firstdeflecting surface 51 is curved so as to be concave and extends inlongitudinal direction L of the pressure distribution chamber 18. Thefirst deflecting surface 51 is laterally offset relative to the firstdeflecting surface 46 of the first deflecting site 41. The longitudinalcenter plane 34 through the exit opening 30 may intersect the firstdeflecting surface 51. In the embodiments illustrated here, the firstdeflecting surface 51 directly adjoins the longitudinal center plane 34.The second deflecting surface 62 of the second deflecting site 49 isprovided on the injector base 12 and is part of the recess 19 on theinjector base 12. The second deflecting surface 62 is represented by astraight, plane surface and extends along longitudinal direction L ofthe pressure distribution chamber 18. The first and the seconddeflecting surfaces 51, 62 are arranged above the receptacle 35 for thenozzle strip 36. The flow direction of the medium is determined by theinteraction of the first deflecting surface 51 and the second deflectingsurface 62.

Both first deflecting surfaces 46, 51 have the form of a grooveextending in longitudinal direction L.

The water flow along the flow path 40 thus is initially straight throughthe communicating channel 23 up to the first deflecting site 41. There,the flow is laterally deflected in a direction transverse to thelongitudinal axis 26 of the communicating channel 23 and in a directiontransverse to longitudinal direction L. Farther downstream, there is thesecond deflecting site 49 that deflects the water in the direction ofthe exit opening 30 toward the nozzle strip 36; as a result of this,following the second deflecting site 49, a flow direction is attainedthat extends approximately parallel to the exit opening of the waterjets 38 or parallel to the longitudinal center plane 34 through the exitopening 30. Consequently, the flow path 40 is essentially stepped.

Irregularities 52 may be arranged so as to be, in particular, regularlydistributed in the flow path 40 on the walls or wall sections of thecommunicating channels 23 and/or of the pressure distribution chamber18. Such irregularities 52 may be concave recesses and/or raised beads.Preferably, such irregularities 52 are provided at least on the wallsections of the pressure distribution chamber 18, in particular on oneor more of the deflecting surfaces 46, 61, 51, 62, as is schematicallyshown in FIG. 2 b with reference to the example of the first deflectingsite 41.

FIG. 3 shows an exemplary embodiment of the injector 10, said embodimenthaving been modified compared with FIGS. 1 and 2. The essentialdifference is that the longitudinal center plane 39 through the inflowchamber 13 forms a common plane with the longitudinal center plane 34through the exit opening 30. Consequently, the exit opening 30 isarranged so as to be centered relative to the inflow chamber 13. Otherthan that, reference is made to the description of the first exemplaryembodiment in accordance with FIGS. 1 and 2.

FIG. 4 shows another exemplary embodiment of the injector 10. Differentfrom the previous embodiments, the communicating channels 23 in thiscase are not arranged in a row in longitudinal direction L but in twospaced-apart rows 55 (FIGS. 6 and 7). Both rows 55 are at a lateraldistance from the longitudinal center plane 39 through the inflowchamber 13, so that the longitudinal axes 26 of the communicatingchannels 23 extend parallel to and at a distance from the longitudinalcenter plane 39. In doing so, the longitudinal center plane 39 throughthe inflow chamber 13 divides the injector body 11 into two parts,whereby each of the two parts has a row 55 of communicating channels 23.Therefore, the communicating channels 23 are arranged on both sides ofthe longitudinal center plane 39 through the inflow chamber 13.

In doing so, the flow path 40 through one of the communicating channels23 into the pressure distribution chamber 18 takes the previouslydescribed course. Also in this case, adjoining each communicatingchannel 23 in the pressure distribution chamber 18, there is a firstdeflecting site 41 as well as a second deflecting site 49, so that thewater flowing into the pressure distribution chamber 18 is deflectedtwice along each flow path 40 before reaching the nozzle strip 36 or theexit opening 30. Regarding this, reference may be made to the abovedescription. Considering the two-row arrangement of the communicatingchannels 23, there is a confluence of the streams from the first row 55meet the streams from the other row 55 in the pressure distributionchamber 18. The flow directions of the water inflowing from the firstrow 55 is different from the flow direction of the water inflowing fromthe other row 55.

As is schematically shown in FIGS. 6 and 7, the two rows 55 ofcommunicating channels 23 may be arranged symmetrically with respect tothe longitudinal center plane 39 of the inflow chamber 13. In doing so,the communicating channels 23 are arranged in pairs, so that onecommunicating channel 23 of one pair 56 is arranged on one side of thelongitudinal center plane 39 and the respectively other communicatingchannel 23 of this pair 56 is arranged on the other side of thelongitudinal center plane 39 (FIG. 6). Considering this symmetricalarrangement in pairs, it is possible to have the two streams of water ofone pair 56 of the communicating channels 23 intersect in the pressuredistribution center 18 or to direct said streams against each other,thus achieving good mixing of the water.

FIG. 7 shows an alternative option of arranging the two rows 55 ofcommunication channels 23. Different from the embodiment option inaccordance with FIG. 6, the two rows 55 are offset relative to eachother, viewed in longitudinal direction L. The streams entering into thepressure distribution chamber 18 through the two rows 55 ofcommunicating channels 23 do not intersect in a common plane extendingat a right angle with respect to longitudinal direction L. The waterstreams flow offset in longitudinal direction L into the pressuredistribution chamber 18. As a result of this, the water of theindividual streams may expand well in a direction transverse to therespective flow direction in the pressure distribution chamber 18.

Referring to the exemplary embodiments in accordance with FIGS. 1through 4 of the injector 10, the receptacle 35 for the nozzle strip 36has slit-like recesses 60 on both longitudinal sides, so that bothlongitudinal sides of the inserted nozzle foil 36 come into engagementwith the recess 60. In order to install the nozzle foil 36, said foilmay be slid in longitudinal direction L into the injector 10. In theexemplary embodiment in accordance with FIG. 5, there are no suchrecesses 60. The receptacle 35 is formed by a groove having arectangular cross-section. Holding means or clamping means for pressingthe nozzle foil 36 against the seal 29 may be provided, but are notspecifically shown in the drawings.

The invention relates to an injector for a textile processing machinefor the manufacture of fleece material. An inflow chamber 13 is providedinside an injector body 11, in which case a pressurized medium is madeavailable in said inflow chamber. By way of several communicatingchannels 23, said inflow chamber is in fluid communication with apressure distribution chamber 18. The communicating channels 23 arerepresented by cylindrical bores that are provided in the injector body11. The communicating channels 23 are arranged in one or two rows so asto be offset relative to the longitudinal center plane 39 of the inflowchamber 13. The pressure distribution chamber 18 adjoining thecommunicating channels 23 comprises a first wall section 45 that forms afirst deflecting surface 46. This deflecting surface 46 extends—at leastin sections—diagonally or transversely with respect to the longitudinalaxis 26 of the communicating channels 23. The medium flowing out of thecommunicating channels 23 is deflected by means of the first deflectingsurface 46, so that said medium changes its direction before reachingthe downstream nozzle openings 37 of a nozzle strip 36. Consequently, adirect straight flow to the nozzle openings 37 from the inflow chamber13 is not possible. Through the nozzle openings 37, water jets 38 areformed, said water jets being ejected by the injector 10 via an exitopening 30.

It will be appreciated that the above description of the presentinvention is susceptible to various modifications, changes andmodifications, and the same are intended to be comprehended within themeaning and range of equivalents of the appended claims.

LIST OF REFERENCE NUMERALS:

-   10 Injector-   11 Injector body-   12 Injector base-   13 Inflow chamber-   14 Inflow opening-   15 Pressure source-   16 Cap-   17 Ring seal-   18 Pressure distribution chamber-   19 Recess in 12-   20 Recess in 11-   23 Communicating channel-   24 Input orifice-   25 Output orifice-   26 Longitudinal axis of 23-   29 Ring-shaped seal-   30 Exit opening-   31 Slit-shaped section-   32 Conical section-   33 Exit side-   34 Longitudinal center plane of 30-   35 Receptacle-   36 Nozzle strip, nozzle foil-   37 Nozzle opening-   38 Jet, water jet-   39 Longitudinal plane of 13-   40 Flow path-   41 First deflecting site-   45 First wall section of 18-   46 First deflecting surface of 41-   49 Second deflecting site-   50 Second wall section of 18-   51 First deflecting surface of 49-   52 Irregularities-   55 Row of communicating channels-   56 Pair of communicating channels-   60 Recess-   61 Second deflecting surface of 41-   62 Second deflecting surface of 49

What is claimed is:
 1. Injector for a textile processing machine, saidinjector comprising: an inflow chamber (13) connected to a pressuresource (15), at least one communicating channel (23) terminating in theinflow chamber (13) at an input orifice (24) and in a pressuredistribution chamber (18) at an output orifice (25), an exit opening(30) in fluid communication with the pressure distribution chamber (18),a receptacle (35) for a nozzle foil (36) having a plurality of nozzleopenings (37) for the formation of jets (38), in which case the nozzlefoil (36) inserted in the receptacle forms jets (38) that are dispensedthrough the exit opening (30) of the injector (20, wherein the flow path(40) between the inflow chamber (13) and the exit opening (30)prespecified by the communicating channel (23) and the pressuredistribution chamber (18) comprises at least one deflecting site (41)where the water flowing through changes its flow direction.
 2. Injectoras in claim 1, characterized in that the at least one communicatingchannel (23) represents a bore that is cylindrical, in particular. 3.Injector as in claim 1, characterized in that the at least onecommunicating channel (23) extends outside the longitudinal center plane(34) of the exit opening (30).
 4. Injector as in claim 1, characterizedin that several communicating channels (23) are provided, whereby atleast one of the communicating channels (23) is arranged at a distancefrom the longitudinal center plane (34) on each side of the longitudinalcenter plane (34) through the exit opening (30).
 5. Injector as in claim1, characterized in that, downstream of the output orifice (25) in thepressure distribution chamber (18), a first deflecting surface (46) isprovided at the first deflecting site (41), said first deflectingsurface being arranged diagonally or transversely with respect to theoutflow direction of the medium flowing out of the output orifice (25).6. Injector as in claim 5, characterized in that the first deflectingsurface (46) is formed on a first wall section (45) of the pressuredistribution chamber (18).
 7. Injector as in claim 5, characterized inthat the first deflecting surface (46) has a curvature that determinesthe deflecting direction of the flow.
 8. Injector as in claim 1,characterized in that, downstream of the first deflecting site (41) inthe flow path (40), another, second deflecting site (49) is provided,said second deflecting site being located in the pressure distributionchamber (18).
 9. Injector as in claim 1, characterized in that theinflow chamber (13) and the at least one communicating channel (23) areprovided in an injector body (11).
 10. Injector as in claim 9,characterized in that an injector base (12) having the exit opening (30)is connected with the injector body (11).
 11. Injector as in claim 10,characterized in that the pressure distribution chamber(18) is delimitedby the injector body (11) as well as by the injector base (12). 12.Injector as in claim 1, characterized in that the first deflecting site(41) is formed by a first deflecting surface (45) and by a seconddeflecting surface (61).
 13. Injector as in claim 12 in conjunction withclaim 11, characterized in that the first deflecting surface (46) of thefirst deflecting site (41) is provided on the injector base (12), andthat the second deflecting surface (61) of the first deflecting site(41) is provided on the injector body (11).
 14. Injector as in claim 8,characterized in that the second deflecting site (49) is formed by afirst deflecting surface (51) and a second deflecting surface (62). 15.Injector as in claim 14 in conjunction with claim 9, characterized inthat, at the second deflecting site (49), a first deflecting surface(51) is provided on the injector body (11).